ecig Is A Scam

I bought 2 ecigs. Knight Stick and Joye 510. They both worked well out of the box. The Knight Stick sent 2 cartridges and gave about 75 puffs each. Refills would cost about $5 per pack equivilent.
I then bought the Joye 510. The attached cartridge worked well out of the box for about 15 puffs. When I tried to refill, I get NO smoke. I've tried everything. I've watched dozens of YouTube videos on how to solve ecig problems. Nothing has worked. NO smoke.
ecigs are a scam developed by scammers making money off of people looking for a solution to a problem.
Keep looking folks. ecigs don't work. The people telling you that they do work are just scammers selling a product to line their own pockets.